| Tradescantia purpurascens S. Schauer, 1847 |
| Tradescantia pygmaea D.R. Hunt, 1975 |
| Tradescantia rhodantha Torr., 1859 |
| Tradescantia riomolinensis Matuda, 1974 |
| Tradescantia rozynskii Matuda, 1955 |
| Tradescantia saxicola Greenm., 1903 |
| Tradescantia schiedeana Kunth, 1843 |
| Tradescantia schippii D.R. Hunt, 1983 |
| Tradescantia schlechtendalii Kunth, 1843 |
| Tradescantia schomburgkiana Kunth, 1843 |
| Tradescantia semisomna Standl., 1937 |
| Tradescantia sillamontana Matuda, 1955 |
| Tradescantia soconuscana Matuda, 1955 |
| Tradescantia spathacea Sw., 1788 |
| Tradescantia speciosa Kunth, 1815 |
| Tradescantia standleyi Steyerm., 1944 |
| Tradescantia stenophylla Brandegee, 1909 |
| Tradescantia subramosa Matuda, 1960 |
| Tradescantia subscaposa C.B. Clarke ex Donn. Sm., 1890 |
| Tradescantia subtilis Matuda, 1960 |